Explain touchRatio in docs

[missmatsuko]

touchRatio is mentioned in the docs, but I can't find anything describing what it actually is/does:

Link to docs: https://idangero.us/swiper/api/#parameters

This is a (multiple allowed):

• bug

• enhancement

• feature-discussion (RFC)

• Swiper Version: EXACT RELEASE VERSION OR COMMIT HASH, HERE.

• Platform/Target and Browser Versions: PLATFORM CLIENT YOU ARE TARGETING SUCH AS macOS, Windows, CORDOVA, IOS, ANDROID, CHROME, ETC.

• Live Link or JSFiddle/Codepen or website with isssue: PREFERABLY (IF YOU WANT YOUR ISSUE TO BE RESOLVED ASAP).

What you did

EXPLAIN WHAT YOU DID, PREFERABLY WITH CODE EXAMPLES, HERE.

Expected Behavior

EXPLAIN WHAT IS TO BE EXPECTED, HERE.

Actual Behavior

EXPLAIN WHAT IS ACTUALLY HAPPENING, HERE.

P.S. Remember, an issue is not the place to ask questions. You can use Stack Overflow
for that.

Before you open an issue, please check if a similar issue already exists or has been closed before.

[elanclarkson]

This appears to be an issue again. (or still?)

https://swiperjs.com/swiper-api#param-touchRatio